Combination adjustable measuring device



Nov. 2 1926.

C. DE NARDE- COMBINATION ADJUSTABLE MEASURING DEVICE Filed June 25, 1925 INVENTOR CAESAR DE NARDE WY 'A ORNEY lrmmn. EL

Patented Nov. 2, 1926 UNITED STATES CAESAR DE NARDE, OF SAN FRANCISCO, CALIFORNIA.

COMBINATION ADJUSTABLE MEASURING DEVICE.

Application filed June 25, 1925.

This invention relates to improvements in pocket-rules, and in particular to a combincd carpenters pocket-rule and bevelsquare of an adjustable character, wherein a the blade, or tongue, forming the square is pivotally mounted to a leaf of the rule and foldable within a slot formed therein for its reception, when out of use.

An important feature of this invention in resides in the method of pivotally attaching the blade, constituting the square, to one leaf of the rule, so than an extension member thereof may engage a stop in the adjacent abutting hinged leaf to prevent the furl ther sweep, or rotation of the blade about its pivot point beyond an angle, of ninety degrees in any one direction, this being its limit of movement, and adapted to fold into the rule to which it is pivoted.

21: The device may be used to advantage as :1. square in marking and measuring the width or thickness of material, and the blade may be readily adjusted to any angle within its scope of movement by means of protractor graduations concentrically scored about the blade pivot.

The object of the invention is the provision of a handy combined Docket-rule and adjustable bevel-square of a character most suitable for carpenters use, that is simple in construction, compact and that is readily adjustable, and equally applicable for use as a square, or for laying off angles.

Another object is the provision of a device 9.5 of this character having a pivoted blade,

rigidly secured to the pivot stud and hearing a pointer registering with the longitudinal center of the blade and movable therewith, the rule-leaf to which it is pivoted bearing protractor graduations for the guidance of the user in setting the blade at the desired angle.

Other objects and advantages will be apparent with reference to the subjoined speci fication and accompanying one sheet of drawings, in which:

Figure 1 is a top plan view of a combined rule and square constructed in accordance with my invention, showing the rule proper folded and the pivotal blade swung out to position for use as a square, the dot and dash position indicating the position of the blade when set at a forty-five degree angle;

Fig. 2 is an edge view showing the blade Serial No. 39,412.

folded into its slot formed in one of the leaves in the rule; I

Fig. 3 1s a transverse section of the device taken through the pivot stud, showing the pocket in the adjacent leaf of the rule in -which the extension of the blade engages to prevent further movement through more than ninety degrees of an arc in one direction; and I Fig. 4 is' a sectional detail showing the pivotal arrangement of the blade with respect to the rule-leaves, the slot in one leaf for itsre-ception when folded, and the pocket adapted to form a stop for the blade extension in the adjacent leaf ofthe rule.

Referring in particular to the drawings,

the device preferably comprises a folding .rule having four hlnged leaves (1), (2),

(3) and l) of oridinary construction, hinged at the points (5) and (6), the rule shown in the drawings having four nine inch leaves with the ordinary graduation marks scored thereon in inches and fractions thereof.

The blade (7) is pivotally secured within the slotted leaf (1) of the rule by the pivot stud (8) and adapted to swing into the slot (9) and lie flush with the outer edge of the leaf when folded, as shown in Figure 2. The blade (7) is provided with an extension (10) which swings past the parting line between the rule-leaves (1) and (2) and when said blade is swung out at right angles to the leaf (1), as shown in Figures 1 and 4, this extension abuts against the end wall (11) of the arcuate pocket (12) formed in the rule-leaf thereby forming a rigid stop and preventing further rotation of the blade (7) upon its pivot stud (8), in the one direction, but allowing of its free move- .7

ment in the opposite direction.

The pivot stud (8) is preferably rigidly attached to the blade (7) and turns therewith, it being provided with a countersunk head (13) and upset lower end (14) and set sufficiently tight to retard movement of the blade (7) when the device is in use. The head (13) of the stud may be provided with a pointer, and the upper face of the rule-leaf (1) may be concentrically scored as indicated at (15) with protractor graduations, as shown in Figure 1, to facilitate the setting of the blade at the proper angle.

The blade (7) is preferably about six inches in length, when in its right angle position shown in Figure 1, and is graduated on its inner edge with the graduation marks reading from the outer edge of the rule-leaf (1) to the outer free end of the blade, as indicated at (16).

The device may be used as an ordinary folding rule for measuring purposes and when desired for use as a square or for mitering purposes may be instantly adjusted by withdrawing the blade ('7) from its hous ing in the leaf (1) and swinging it to any desired point, at which point it will be held by virtue of frictional contact of the extension member thereof, frictionally bearing between the slotted members of the ruleleaf hat I claim and desire to secure by Letters Patent of the United States, is the following:

1. In a device of the character described, the combination with a folding pocket-rule having a plurality of hinged leaves, one of said leaves having -a slot and an adjacent leaf an arcuate pocket, of a blade pivotally mounted in said slot and provided with an extension member, said blade being adapted to swing outwardly from the slotted leaf and to remain at any predetermined point in its arc of travel by frictional engagement within said slot and, when swung to a right angled position, to bring its extension memher into contact with the end wall of said arcuate pocket in the adjacent leaf, to act as a stop to prevent further rotation thereof.

2. In a device of the character described, the combination with a folding pocket-rule having a plurality of hinged leaves, one of said leaves having a slot and bearing pro tractor graduations upon its upper face and an adjacent leaf having an arcuate pocket bearing a straight end-wall, a blade having an extension adapted for pivotal mounting in said slot, a pivot stud for said blade, and

CAESAR DE NARDE. 

